Lessons (re)learned about growing healthy table grapes on my arbor

Neither can you produce a healthy crop of table grapes when the grapevine is infested with fungal disease such as powdery mildew or gray mold (bunch rot) (see my column on August 20, 2017). Here are a few pictures of my arbor grapevine with telltale signs of powdery mildew on leaves, canes and developing fruit. I’ve seen blue jays feeding on the grapes; birds and insects spread the disease from one grape cluster to another.

About the Author

Rhonda Nowak

Rhonda Nowak is a Rogue Valley gardener, writer and teacher. With more than 25 years of gardening experience and a Ph.D. in literature and language arts education, she combines a love for plants, poetry, and prose in her Literary Gardener blog. ... Full Profile